Peters



(No Model.) 6 Sheets-Sheet 1.

R.l BIRK'HQLZ. SPIR-AL GONVBYER. 188858124. 'Patented Deo. 28,1888.

(No Model.) 6 'Smeets-Sd;eet;- 3.

R. BIRKHOLZ. SPIRALGONVBYBR.

Patented Da o. 28,1886.

MMS.

NA PETERS Fmwumognpnar, wmangum. u, c.

(N o Model.) 6 Sheets-Sheet 4.

Rg BIRKHoLzi SPIRAL GONVBYBR. n No. 355,124. f Patented Deo'. 28, 1886.

N, PETERS. Plmmumngmpmn wuhi nnnnnnn c.

R.- B IBKHOLZ.

l SPIRAL GONVEYBR. Y l No. 355,124. Patented Deo. 28, 1886.

N. PEYERS. Phmo'Limagmphen wnhingmn. DJ;

(No Model.) K 6 Sheets-Sheet 6. R. -BIRK-HOLZ,

sPIRAL ooNvBYBR. No; 355,124. Patented Deo'. 28, '1886.

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N` PETERS, Fnuau-Lnnngmpmr. wnshinglun, D. C.

UNITED STATES PATENT OFFICE.

RICHARD BIRKHOLZ, OF MILWAUKEE, WISCONSIN, ASSIGNOR 'IO EDWARD P. ALLIS, OF SAME PLACE. Y

S'PIRAL CONVEYER.

SPECIFICATION forming part of LettersPatent No. 355,124, dated December 28, 1886.

' Application filed October 4, 1886. Serial No. 215,281. (No model.)

`T aZZ whom, it may concern:

Be it known that L RICHARD BIEKHOLZ, of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Spiral Conveyers, of which the following isa specification. My invention relates to spiral conveyers, and has for its object to construct a conveyer so that its flights may be removed from the 1o shaft and reversed, whereby the conveyer may be made a right77 0r left conveyer, at will. In milling machinery and in other classes of machinery it is often found necessary or desirable to change the throw or direction of feed x 5 ofthe conveyer, so as to make the conveyer feed to the right or to theleft, and at the same time to so construct the conveyer that this result may be accomplished without any change in the direction of rotation, because it is frezo quently impossible ory undesirable to change the direction of rotation -of the shaft; and to produce such a conveyer is the object of my invention.

I desire to state that prior to my invention various contrivances and plans have been devised in which the flights were secured directly but adjustably to the shaft, and that I yam aware that it has been proposed to pivot the flights upon a shaft and to tip and rock 3o them to vary or change the inclination of the flights; andv these features I disclaim.

Myinvention consists in providing the conveyer-shaft with hubs or collars to encircle the shaft, and secured thereto by means of a set- 3 5 screw or equivalent means, each collar .orhub being provided with asingle iight and adapted to be taken from the shaft when desired, reversed, and then placed thereon again and secured in place. By this means I/produce a 4o conveyer that can be easilyand quickly transformed from a' right to a left conveyer, or vice versa.

In the drawings, Figure 1 is a side View of a portion 0f a con veyer-shaft with one flight in position; Fig. 2, an end view of same; Fig. 3, atop view; Fig. 4, a face view of the flight; Fig. 5, a view showing the conveyer Hight transposed in position; Figs. 6 to 9, views illustrating a slight modification of construction 5o shown in Fig. 1. Figs. 10 to 13, 14 to 16, 17

'y to 20, and 2l to 25 are views illustrating in,

groups various modifications in the construction of the hub, the hubsecuring, and the flight-attaching devices.

A indicates a shaft, which may be of wood or. iron, solid or hollow, and of any desired form in crosssection, the circular solid form being shown in the drawings, as such isfmost commonly used.

B indicates a hub or collar, which will be` preferably made of cast metal and of a size to t the shaft, though this latter requirement is lnot essential, the hub or collar comprising under all the various constructions one, and inmost cases two parts or halves, B' B2, to one of or between which the conveyer-flightCis secured. 'lhe manner of constructing this hub or collar is preferably as follows: I cast the parts B and BZ in one piece and with a hole through them to receive the shaft, or the hole may be bored to t. On opposite sides ofthe collar are cast integral therewith pins D, which project lengthwise thereof, as shown in Figs. 1

and 3. The casting thus constructed is cut diagonally in two in a vertical plane at an oblique angle to the shaft, thus dividing the collar into halves B and B", in all respects alike. Either half, B or B2, will be found to have apin, D, and is provided with a set-screw, a,by which to secure the collar upon the shaft. It is'apparent that the two parts B Bl may be cast separately.

Referring now to Figs. vl to 5, inclusive, I will describe the construction of the preferred form of conveyer. The hubs or collars BB2 are each secured upon the shaft by means of asetscrew, a, and these hubs clamp between theiradjacent faces the flight C, Vwhich latter is or may be of sheet metal and semi-elliptical in form. One of the pins D, formed upon each hub, enters a hole in the iiight, as shown in Figs. l and 3, and prevents any movement of the iiight independent of the hub. K. The flight shown in Figs. 1 to 5 is semielliptical, but owing to the inclination of the same appears to be semicircular when looking at the end of the shaft, as in Figs. 2, 7, 11,16, 18, and 22. The flight is cut out at its inner edge to fit upon the shaft, and is perforated to receive the pin D, and when thus constructed it is placed between the adjacent faces of the two parts of the hub, as shown in Figs. 1, 3, and 5. When the iiight is in position, the pin D projects through the hole-'rand prevents turning independently of the collar in case the flight should not be clamped tight enough between the collars.

When it is desired to reverse the conveyer,

it is only necessary to loosen the nuts a and slip the collars off the shaft, and after reversing the flight with its hub, endfor end, slip it upon the shaft, as shown in Fig. 5. It will be noticed that in Figs. 1, 2 and 3 the pinsD are both formed upon one half, B', While in the construction shown in Figs. 6 to 9, inclusive, one pin is formed on each of the halves of the hub.

In Figs. 10, 11, 12, and 13, instead of using separate set-screws a and the pin' D, I show perforated ears or lugs a2 on each half of the hub, and a bolt, a, passing through these lugs and through the conveyer-iiight, this bolt notonly serving to clamp the iiight be# tween the-hub-sections B B2, but also serv- 4ing the same purpose as the pins D of the construction above explained. By reason of the inclination of the faces of the hubs between which the night is clamped when the bolt a3 is drawn up tight, it causes the portions B B2 to assume a position upon the shaft slightly at an angle thereto, and thus cramp or bind the collars upon the shaft.

In Figs. 14, 15, and 16 the hubs or collars are represented as beveled at the ends, aswell as being divided obliquely, each half B B2 beingprovided with its set-screw a and two pins, D. By beveling or inclining the ends of the hub I am enabled to bring the edges of the ights close together, should it be desired to do so. y y

In Figs. 17 to 20, inclusive, is shown an arrangement by which only onehalf of the hub B is used, the Hight being in such case secured to the inclined faces or end of the hub bymeans of a bolt or screw, a. The hub is retained upon the shaft by means of a setscrew, a, as shown, or equivalent means.

Figs. 21 to 25, inclusive, showasimilar construction.

In this arrangement Il employ one half, B', of the hub, but make this half in two parts, as shown, whereby the Hight is not only secured in place between the parts of the hub, but the latter is secured in place upon the shaft. The flight is provided with two dependingarms, a5, which are bcntat right angles to its body, as shown in dotted lines in Fig. 21.

These bent arms are placed between the two parts of the hub, and clamped therein by means of screws a, which serve also to bind the two parts of the collar or hub upon the shaft.

I consider that all the various forms herein described and shown are within the scope of my invention; but do not limit myself to any particular form of device.

Having thus described my invention, what I claim is 1. In combination with a shaft, a hub or collar encircling the same and provided with a face oblique to the axis of the shaft, a flight secured to said oblique face, and means for securing the collar in positionlupon the shaft.

2. In combination with a shaft, a hub or collar encircling the same and consisting of two parts, B and B2, a flight secured between the adjacent faces of the hub-sections, anda screw (one or more) for securing the iiight to the collar and the collar upon the shaft.

3. In combination witha shaft, a hub or collar encircling the same, consisting of two parts, B and B2, a pin, D, formed upon one of said parts and passing through the Hight, and a set-screw, a, for securing the collar in place.

4. In combination with a shaft, a hub consisting of two parts and a iight'secured to and carried by said hub.

5. In combination with ashaft, a reversible removable hubor collar encircling the same and provided with a face oblique to the axis of the shaft, a flight secured to said oblique face, and means for securing the collar in po sition upon the shaft.

RICHARD BIRKHOLZ.

"Witnesses: r

JOHN I. MARSHALL, CHARLES WVALDO. 

